Finding the Third Proportional to 789,609 and 1,179,144

Step by Step Solution

1. Step 1: Write the proportion equation
   789,609 : 1,179,144 = 1,179,144 : x
2. Step 2: Convert to fraction form
   789,609/1,179,144 = 1,179,144/x
3. Step 3: Cross multiply
   789,609x = 1,179,144 × 1,179,144
4. Step 4: Simplify right side
   789,609x = 1,390,380,572,736
5. Step 5: Solve for x
   x = 1,390,380,572,736/789,609
6. Step 6: Final answer
   x = 1,760,846.92